Image is for illustrative purposes only. Please refer to product description.
- Manufacturer
- Siemens
- Manufacturer part number
- 6ES7350-1AH03-0AE0
- Product family
- SIMATIC S7-300 PLC Modules
- Technical datasheet
- Data sheet
Specifications
| Attribute | Value |
|---|---|
| Type | Counter module |
| Manufacturer lifecycle | Discontinued |
| Auxiliary voltage 1L+, load voltage 2L+ / Rated value (DC) | 24 V |
| Auxiliary voltage 1L+, load voltage 2L+ / permissible range, lower limit (DC) | 20.4 V; Dynamic 18.5 V |
| Auxiliary voltage 1L+, load voltage 2L+ / permissible range, upper limit (DC) | 28.8 V; dynamic 30.2 V |
| Input current / from load voltage 1L+ (without load), max. | 40 mA |
| Input current / from backplane bus 5 V DC, max. | 160 mA |
| 5 V encoder supply / 5 V | Yes; 5.2 V ±2 % |
| 5 V encoder supply / Output current, max. | 300 mA |
| 24 V encoder supply / 24 V | Yes; 1L+ (-3 V) |
| 24 V encoder supply / Output current, max. | 400 mA |
| Power loss, typ. | 4.5 W |
| Number of digital inputs | 3 |
| Digital inputs / Functions | 1 for gate start, 1 for gate stop, 1 for setting the counter |
| Input voltage / for signal "0" | -28.8 ... +5V |
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| Input voltage / for signal "1" | +11 to +28.8V |
|---|---|
| Input current / for signal "1", typ. | 9 mA |
| Number of digital outputs | 2 |
| Digital outputs / Short-circuit protection | Yes; Clocked electronically |
| Digital outputs / Limitation of inductive shutdown voltage to | 2L+ (-39 V) |
| Output voltage / for signal "0", max. | 3 V |
| Output voltage / for signal "1", min. | 2L+ (-1,5 V) |
| Output current / for signal "1" rated value | 0.5 A |
| Output current / for signal "1" permissible range for 0 to 60 °C, min. | 5 mA |
| Output current / for signal "1" permissible range for 0 to 60 °C, max. | 0.6 A |
| Output delay with resistive load / "0" to "1", max. | 300 µs |
| Connectable encoders / Incremental encoder (symmetrical) | Yes; With 2 pulse trains offset by 90° |
| Connectable encoders / Incremental encoder (asymmetrical) | Yes |
| Connectable encoders / 24 V initiator | Yes |
| Connectable encoders / 24 V directional element | Yes; 1 pulse train, 1 direction level |
| Number of counter inputs | 1; 32 bit or ±31 bit |
| Counter input 5 V / Type | RS 422 |
| Counter input 5 V / terminating resistor | 220 Ω |
| Counter input 5 V / Differential input voltage | 1,3 V |
| Counter input 5 V / Counting frequency, max. | 500 kHz |
| Counter input 24 V / Input voltage for signal "0" | -28.8 ... +5V |
| Counter input 24 V / Input voltage for signal "1" | +11 to +28.8V |
| Counter input 24 V / Input current for signal "1", typ. | 9 mA |
| Counter input 24 V / Counting frequency, max. | 200 kHz |
| Counter input 24 V / Minimum pulse width | 2.5 µs |
| Potential separation digital inputs / between the channels and backplane bus | Yes; Optocoupler |
| Potential separation digital outputs / between the channels and backplane bus | Yes; Optocoupler |
| Potential separation counter / between the channels and backplane bus | Yes; Optocoupler |
| Isolation tested with | 500 V |
| required front connector | 1x 20-pin |
| Width | 40 mm |
| Height | 125 mm |
| Depth | 120 mm |
| Weight, approx. | 250 g |
| Phase-out announced (PM400) | 1 October 2023 |
| Product cancellation (PM410) | 1 October 2025 |
| Spare part | Yes, supplied by Siemens as a spare part only |
Description
The Siemens 6ES7350-1AH03-0AE0 is the FM 350-1 counter module with one channel counting at up to 500 kHz. Siemens's data sheet lists 5 V symmetrical and 24 V incremental encoders, 5 V and 24 V encoder supplies, three digital inputs and two digital outputs, and isochronous mode. Siemens's data sheet marks it as a spare part. Siemens names no direct successor for the order number; its route forward is migration to the S7-1500 with ET 200MP.
Application: High-speed counting for S7-300
Used with: SIMATIC S7-300 rack (S7-300 backplane bus)
What is the 6ES7350-1AH03-0AE0 used for?
It counts fast encoder pulses independently of the CPU cycle, for length measurement, positioning and speed on an S7-300 machine.
Key features
- One counter channel, up to 500 kHz
- For 5 V (symmetrical) and 24 V incremental encoders
- 5 V encoder supply up to 300 mA, 24 V up to 400 mA
- 3 digital inputs and 2 digital outputs
- Isochronous mode
- Discontinued by Siemens on 1 October 2025; spare part only
Documents and Resources
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Product Questions
Is the 6ES7350-1AH03-0AE0 discontinued?
Yes. Its manufacturer lifecycle status is Discontinued.
Can another Siemens SIMATIC S7-300 part replace it?
Potential replacements must be checked against the required ratings, dimensions and connections. Sharing a family name does not establish interchangeability.
Do you ship worldwide?
Yes. TimControls ships worldwide. Parts usually ship within 3 to 7 working days of order confirmation, and the exact lead time and shipping options are stated on your quote. Include your delivery country and postal code when you ask for a quote.
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